I've been using plastic buckle thingeys (4 in a $1 package at REI) to make loops on the ends of my polypro treehuggers for my DIY hammock. They're not the release kind. You just run the webbing one way and back through. There's a pic at http://www.msnusers.com/hikingjer/on...to&PhotoID=992
They're quick and easy to adjust loop size and webbing length to adjust sag. They're cheap and light. But their strength and slippage is questionable.
Have any of you all used this kind of plastic buckle? How long did they last? Did they ever crack from stress? Did they ever slip over the course of a night?